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triangulate_a_mesh.py
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triangulate_a_mesh.py
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#!/usr/bin/env python
# -*- coding: UTF-8 -*-
import sys
import os.path
from PyQt4 import QtCore, QtGui
QtCore.Signal = QtCore.pyqtSignal
import vtk
from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
class VTKFrame(QtGui.QFrame):
def __init__(self, parent = None):
super(VTKFrame, self).__init__(parent)
self.vtkWidget = QVTKRenderWindowInteractor(self)
vl = QtGui.QVBoxLayout(self)
vl.addWidget(self.vtkWidget)
vl.setContentsMargins(0, 0, 0, 0)
self.iren = self.vtkWidget.GetRenderWindow().GetInteractor()
# Create source
polygonSource = vtk.vtkRegularPolygonSource()
polygonSource.Update()
triangleFilter = vtk.vtkTriangleFilter()
triangleFilter.SetInputConnection(polygonSource.GetOutputPort())
triangleFilter.Update()
inputMapper = vtk.vtkPolyDataMapper()
inputMapper.SetInputConnection(polygonSource.GetOutputPort())
inputActor = vtk.vtkActor()
inputActor.SetMapper(inputMapper)
inputActor.GetProperty().SetRepresentationToWireframe()
triangleMapper = vtk.vtkPolyDataMapper()
triangleMapper.SetInputConnection(triangleFilter.GetOutputPort())
triangleActor = vtk.vtkActor()
triangleActor.SetMapper(triangleMapper)
triangleActor.GetProperty().SetRepresentationToWireframe()
# Setup renderers
leftRenderer = vtk.vtkRenderer()
self.vtkWidget.GetRenderWindow().AddRenderer(leftRenderer)
leftRenderer.SetViewport(0, 0, 0.5, 1)
leftRenderer.SetBackground(0.6, 0.5, 0.4)
leftRenderer.AddActor(inputActor)
rightRenderer = vtk.vtkRenderer()
self.vtkWidget.GetRenderWindow().AddRenderer(rightRenderer)
rightRenderer.SetViewport(0.5, 0, 1, 1)
rightRenderer.SetBackground(0.4, 0.5, 0.6)
rightRenderer.AddActor(triangleActor)
leftRenderer.ResetCamera()
rightRenderer.ResetCamera()
self._initialized = False
def showEvent(self, evt):
if not self._initialized:
self.iren.Initialize()
self._initialized = True
class MainPage(QtGui.QMainWindow):
def __init__(self, parent = None):
super(MainPage, self).__init__(parent)
self.setCentralWidget(VTKFrame())
self.setWindowTitle("Triangulate mesh example")
def categories(self):
return ['Simple']
def mainClasses(self):
return ['vtkTriangleFilter', 'vtkRegularPolygonSource']
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
w = MainPage()
w.show()
sys.exit(app.exec_())